Boom bucket



Feb. 13,1940. HECK 72,190,339

BOOM BUCKET Filed Dec. 1, 1938 2 Sheets-Sheet 1 0. SHECK BOOM BUCKET Feb. 13, 1940.

2 Sheets-Sheet 2 PatentedFeb .113.1940. d I i2 190 33g11 'v c erics] Oscar, Sheck', Milwaukee, Wis., assignor' to I KoehringCbmpany, .Milwankee,.Wi s..

' wApplicationDecembeh 1, 1938;;Scrial ITO-2113,4345

1Claim. (01. 2595-150)- This invention has'tO: do with an improveddis' is not important to the present inventionbecause' tributing bucket and charging chute construe ofra conventi'onal nature. I tion for pen/lingmachines- 'so-calledwhich con'- It i sufiicesto say that when" the bucket" B-is' sist generally}, today of an" aggregates loading filled witff mixed 'concrete causedto pass there skip arranged .to'charge a drum in which the-agto by meanS-Qf a-chute -9, the bucket will later 5- gregates are mixed, and from which drumy-the be caused' to move-toward" the outer end of ,aggregates arehcaused to pass by mea-ns of a 'the' 'boom A; and ate predeterminedpoint oper discharge chute and a charging chute; into a ated to produce reversal of its traverse by mechdistributing bucket movable on a boom. anism old'in the art. In this manner the door 10 It has been found in respect to the distribut- I .islautomatically opened and the contents of 10 ing bucket that traverses the boom to carry the the bucket discharged onto the subgrade of a mixed concrete aggregates to the site where they road or paving job. are to be deposited,- that action of the passing The bucket comprises the inner vertical wall of the mixed concretefrom the drum into the 3, which is relatively short, and from which indistributing; bucket of heretofore known conclinesoutwardlyand downwardly the inner in- 15 struction tends to effect a certain amount. of clined wall 4. t e w edge of the Well 4 segregation of said aggregates. In other words, is pivoted the door I, previously described, the

Y the for'cefof the aggregates when. chuted from pivot being designated 5, and the front edge; the mixing drum into the distributing bucket portion of the door I is adaptedto abut and has heretofore caused the heavier aggregates close against the lower inclined portion 6 of the 20 such as stone in the mixture to be pushed up Outer wall or front of the. bucket.-

wardly, creating-acertain amount of segregation The inclination of the wall 6 is in a direction thereof relative to the cement and water poropposite to thatof the wall 4,: previously men tions o-ithe aggregates. tioned. Extending from the upper front edge Thepurpose of this invention has been to deportion 'of the. wall 6 and sla y'25' v sign a special type of distributing bucket and t a the is the pp h b th sam with a peculiar arrangement clin'ed section 1 of the front of the bucket. It

f the charging chute for said bucket, which is w 's thet h deer! and t w 6 meet a pai't'of the discharge means of the concrete a a Substantially obtuse angle l e p t eS- mixersothat the segregating effect heretofore. igneted g n lly be at F. The sides 8 of the 30 incident to the filling of the distributing bucket bucket 1 areof the same structure'and simply from the "mixer, in respect to. the mixed ag-' form webs betweenthelateral edges of the sevgregates', is eliminated. eral members I, 3, 4, 6, and I. I

I In the drawings v I With the construction ofthe bucket as above l 'igure' 1 is a side elevation of a distributing set forth,.itisimportant that the charging chute 35 bucket mounted on the boom of a paving ma- 9 for the bucket bejdisposed at a peculiar inchineand embodying the invention. clination and located so that its lower'end is Figure 2 is a vertical sectional View I of the arranged t0 a e 1the mi rete agg bucket, bringing out more clearly the arrangeto be fed to the b c et at an ang e such that v 40 ment of the chute by which it is charged, the said aggregates fa on t e bottom. Portions of 40 arrows showing the up and down whirling movethe bucket inclu i t wa s s 6 d 4, merit of the mixed aggregatesas they feed into and the door I, so that they strike said portions,

the distributing bucket from the chute. or certain of them/at substantially h n le I Figure 3 is a front elevation of the bucket. F, previously mentioned. d In the drawings, the boom of, the paver'is 'des- By doing so, a certain portion of the aggregates 45 ignated A and carries the bucket B in the custends to W rl 1 swirl upw om e a l tomary manner by the provision of a trolleyC, F, and another and about equal portion tends the wheels D of which operate on the lower to similarly move downwardly, and rearwardlyflanges of the spaced channels that make up the as is depicted in Figure 2, by the arrows. The boom structure. The bucket B is equipped at its upward and downwardvortex effects thus caused 5 lower end'with a door I, adapted to be autoas the bucket B is charged fromthe chute 9 maticall'y opened and closed by suitable mechhave been found-v to be effective forpreventing anism, not shown, which includes the operating any disadvantageou's or, harmful segregationof rods 2, yieldably, connected with suitable rocker the larger aggregates of the concrete from the mechanism in the trolley or carriage C, and which smaller. 51

In constructions of buckets heretofore proposed, the front or outer wall of the bucket was customarily made vertical, and the chute in charging the bucket caused the concrete to be shoved upwardly toward such front wall, thus tending to separate and push the larger aggregates upwardly with segregating efiect. Such action of the concrete is entirely avoided by the construction of mybucketherein proposed, and the arrangement of' the charging chute therefor, as

described and shown in the accompanying'drawings. Of course, the charging chute 9 is practically speaking a stationary section or the discharging means for the drum of the paving mixingt mawall inclining downwardly and rearwardlyso that the two meet at an angle some distance above the'plane of the bottom of the bucket, a'

door for the bottom portion of the'bucket clining rearwardly andupwardly from its front edge to its rear edge andmeeting 'at its front Q edge the lower edge portion of ,the lower inclined wall at the front of the bucket so that. the door w and side wall are at substantially an obtuse angle, the rear portion of the bucket beingmade up of a rearwardly and upwardly inclined wall lead gregates at a for-wa'rd and downward'angle to gregates will strike the lower portion of the .bucketabove the door and the lower front wall at the front of the bucket at about the point of the angle atjwhich these parts meetywherebyto cause an upward whirling and'a downward "swirlingmovement of the aggregates asj'they enter the-bucket-and impinge the bottom portion thereof, to thusyeliminate segregationhofthe :s'aid ag gregatesr oscARsrmcK ing from the rear edge portion of the door; and "'a chute arranged above the bucket to cooperate; therewith and cause charging of concrete aggregates into a the bucket by movement of 'the age the vertical axis of the bucket so that said age; 

